Abstract:Objective To study the chemical constituents of Smilax china.Methods The compounds were isolated by silica gel,Sephadex LH-20,ODS chromatography, and semi-preparative HPLC.Their structures were elucidated on the basis of MS and NMR spectroscopic analyses.Results Seven flavonoids and four stilbenes were isolated and identified as dihydrokaempferol-S-O-β-Dglucoside(Ⅰ),engeletin(Ⅱ),isoengeletin(Ⅲ),dihydroquercetin-3-o-glycoside(Ⅳ),3,5,7,3‘,5‘-pentahydroxy-flavanonol(Ⅴ),astilbin(Ⅵ),quercetin-3‘-O-glycoside(Ⅶ),piceid(Ⅷ),scirpusin A(Ⅸ),resveratrol(Ⅹ),and oxyresveratrol(Ⅺ).Conclusion Compounds Ⅳ-Ⅸ are isolated from this plant for the first time,among which the 13C-NMR data of compound IX is reported firstly.